Process or method of purifying or clarifying water.



W, K, RICHARDSON. PROCESS OR METHOD OF PURIFYING 0R GLARIPYING- WATER APPLIOATION FILED 0011,1908,

Patented May 24, 1910.

me am 2 6304 1:

M T Fl VESSES UNITED STATES ATlilhlT PROCESS OR METHOD OF PUBIFYING OR CLARIFYING WATER.

Specification of Letters Patent.

Patented Mags 2st. 191th Application filed October 1. 1908. Serial No. 455.590.

To all whom it may concern:

Be it known that I, human I{ING R1011- ARDSON, a citizen of the United States, residing at Leavenworth, in the county of Leavenworth and State of Kansas, have invented a new and useful Improvement in Processes or Methods of Purifying and Clarifying lVater, of which the following is a specification.

This invention relates to a. process or method of purifying and clarifying water, in a revolving receptacle by centrifugal force, and has for its object, to evolve a process or method whereby the precipitation and separation of all the solid and impure matter contained in the water of a greater specific gravity than water, is efi'ected instantly thoroughly and inex 'iensively. That this may be understood reference is to be had tothe accompanying drawings, in connection with the process herein described.

Figure 1, is a section on line 11 of Fig. 2. Fig. 2, is a vertical section.

In said drawing 1, designates the base plate of this apparatus, which is bolted or otherwise secured to annular using 2; the base, plate having a central threaded opening 3, and an internal central opening a, 0 greater diameter than 3, formed by an off set or step as shown. Secured to step of opening 4, is a semi-steel orstrong cast iron water-column 5, the flange of which is faced and turned, the outside perpendicular wall of water-column beingturned and polished.

6, indicates the top plate, bolted or otherwise secured to casing 2, and with base plate 1, forms the alr and water chamber of the pump 7.

8, indicates the shaft which is keyed to driver 9.

10, is the chamber of the impeller which is.

formed by bolting driver 9, to casting 13.

11, indicates a cast steel water-seal sleeve, which should be turned all over, with waterseal grooves. cut as shown in Fig. 1; this Water-seal sleeve is bolted to member 13, and is to prevent water from entering the impeller from the air and water chamber 7, its lower end always being immersed below the surface of the. water.

12, indicates outlet or discharge for pure water.

13, indicates a dish of. greater diameter than member 9 with outer portion turned up as shown in drawings, and when bolted to driver 9 the annular water chamber 14 is formed between the upward and outward deflected inner wall of member 1i; and pcriphery of member 9; the center of said disk having a suitable opening which forms the intake to chamber 10.

13 indicates the impeller blades which are cast integral with member 11% and are of usual type.

11, is an annular water chambcr.

15, indicates discharge port for pure water from chamber ll into chamber T: It), dis charge port for solid matter and impure water from chamber 1-l into rcscrvoir 19. 17, an annular check valve which partly covers the annular water chamber ll, extending over the driver 9 sullicicutly far that the port 15, will form a liquid seal to the chamber 10, and supported upon the outer rim of casting 13, and held in place by studs 17* inserted into casting 13: on the end of these studs are lock nuts 17" for regulating the throw of the valve; the valve seat being formed as shown and for the purpose of opening and closing the restricted passage 16, as hereinafter described.

18, indicates a secondary reservoir for the purpose of receiving the water and impuri ties discharged through port in, having outlet through pipe 19.

20, indicates an air valve in the suction 23. said suction being provided with a check or foot valve of usual type, not shown. 21, an air valve which communicates with the air and water chamber '4', through casino" 2.

22, is a ledge or bracket on which supported the reservoir 18.

Having thus described the several parts of this machine, I will describe its operation, and results obtained therefrom.

This pump is primed in the usual way: the suction pipe is filled with the fluid to be pumped to a level of the impeller: power is applied to the impeller through the shaft 8: the revolving impeller forces the fluid to the periphery and fills the annular ater chamber 14 the same being so constructed that no fluid is discharged from the port 15 until the fluid has flooded the periphery of the impeller, rendering the chamber of the impeller air tight in relation of backward flow of the air in airand water chamber 7. As the fluid is forced into the chamber 7 the air which is confined becomes compressed in ratio to the resistance of head or pressure pumped. Should the head be such as to compress the air to such a density that the water rises to the level of the inipeller by opening the air valve 20 in the suction, air is introduced into the chamber, and the water is forced to a lower level. Should the air valve 20, remain open the confined air would force the water level to remain just; below the top part: of water discharge pipe 12, at which point the air would. then escape with the Water as it was being forced out of the pump The pressure of the Water upon the under Ride of the valve 17, causes it; to rise against the loclC nuts which are set at any desired height to regulate the cross section of discharge opening 16. The centrifugal force throws the matter contained in the Water of a greater. specific gravity than Water, against the outer wall of chamber 14, Where, ii? the erosive action of the vatcr and centrifugal force. it is deflected along the outer wall of chanihe' lei and through discharge opening 16 into the reservoir 18, the larger portion of the Water flowing into chanihcr it being discharged through port or opening 15.

It should he sta ed it rctpiires great rein trifugal force to ei'i'ect ctlicicnt separation ot the impurities from the Water, and that high velocities of flow, racing ot the tluid, eddv currents, and shock, must he avoided, and air the agent used in connection with the herein described form ofinstrunicntalitv used in carrying out this PIOCPHFP, by retainin; the chan'iher ot' the in'ipeller filled with Water, Irv rcsiiiting the delivery oilwater therefrom. Not employing this air cushion against which the water is delivered and held in check the .vatcr would issue from the center of the impeller, with a velocity increasing, toward the periphery directl as the rotary velocity of the impeller at that point, and at tl e p L .Y i -v oi the impeller Where the water 15 tilSCl llltt) the a r 3 3 nular vater chamber which surrounds it, velocity of flow would he great, and the impact therefrom would cause violent? agitzr tion of the water in this chandler, and the veloity of flow would entrain and carry with it the matter desired to he separated. in cniployii lion does not; exist, for if the air pi ire within the casing, is, say l t) the. pressure, the machine inust rotate a a speed sullicient to generate a ccntril'ugal torce slightly exceeding: lit) the. hct'orc any water will he delivered from the annulardiecharge this air pressure this condi- J l t t t l t t t E i chamber, and its velocity of llon' l l'Ulll the I intake or center toward the periphery diminishes, for the area of cross; se tion ot the chamber of the impeller incrcascs toward the fltjl'lplltflxfl and the velocity of llO'iV of the water at; the periphery is directly as the volume of water pumped. 'lhcrctore,

it is plain to be seen with this air cushion 'lfhe aeration ot Water is an additional :tunc-' tron the air performs in the purt-gticatzon of the water in this process and it is only neces ary to call attention to this fact, that the condition cxi s; for the Water is thrown oil with the pcir heral speed ol the inipcller and impinges on the side of the easing, heroines atomized and saturatml vvith air; it then falls h'y gravity to the bottom of the casing. there to he discharged try the repulsive action ol? the air under prcssure, separate from its impurities 1 linishcd prod not under h vrrtraulic head, sutl'icicnt for its distribution and use. i

The ends of the impeller blades extend across chanihcr it. so that the issuing Water from hamber 10 of the impeller will have a velocity imparted to it equal to the velocitroi' the rotating impeller at that point for the purpose ot preventing the racing; ot the rluid in ii! annular water chainl'ier it. The water discharged h v centrifugal t'orce through ports than i into chanihcr '7 containing" air which is coutiucd, lmcoincsv 1d in ratio to the re istance of head coinpreh or )1Q5 Slti'0 nun'icd. This" air cushion is the potential pou'e which civpcls the lluid ironi chainhcr T through discharge ii! and the im pure water in roscrwiir 18 through discharge it).

The structure is not herein specifically claimed. the ltttt'lC twin shown and specific ally claimed in in}; co-pcnding application, tcrial Ho. tSlJSil,

ll aving thus dcscrihcd the invention what i claim new and desire to secure lvv licttors l atc t i l. the p t; or method of purifying or in the prcecn e or air under prefisure, to rotary velocity sutlicient to separate the solid matter contained in, and held in in. the water, and discharging liy p1" re the solid matter with a the water, and discharging; the si-pz'lrately, hoth being delivered apparatus snhstan ially as dcsuspension pneumatic portion at pure Water from said scrihed.

The pi"cc; s or method of purifying and clarit' \vater which consists in suhjutting Water to the action of centrifugal force in the presence ot air under pressure, ucintin l mist-harping the pure water in pneumatic prc eure and separately die; charging tluprrcipitaic li y pneumatic pres ure, J-Jri istantiallv as dcscrihwt 'lIAIiDSUIx', ltJIL-KRDSON. 

